Airbag control unit with part number A1718205826

What does the airbag control unit A1718205826 do?

The airbag control unit A1718205826 is the central control unit of the restraint system (SRS) for Mercedes-Benz. It evaluates the signals from the crash sensors and decides within milliseconds in the event of an accident which airbags and seatbelt pretensioners are triggered. After an accident, it stores crash data and locks itself.

The control unit monitors the restraint system continuously. If it detects a fault, it reports this via the airbag warning light in the instrument cluster.

The housing also carries the manufacturer number Bosch 0285010164.

Why does the control unit A1718205826 fail?

The most common cause is crash data stored after an accident, even if no airbag has deployed. Other causes include aged electronic components, cold solder joints, moisture and corrosion on plug connections, and voltage spikes. On the control unit A1718205826, deleting the crash data is often not possible; if you would like it deleted, get in touch with Airbag24 briefly before sending the unit in, so that the part number can be checked.

After an accident, the unit saves crash data to its memory and keeps it there.

• Aged electronic components
• Cold solder joints
• Moisture and corrosion on plug connections
• Voltage spikes, for example from a weak battery or a jump start

How can you tell that the A1718205826 is defective?

A fault on the A1718205826 shows up in the airbag warning light, which stays on permanently or intermittently, and in a fault message in the instrument cluster. A diagnostic tool then gets no connection to the control unit. In an emergency, the airbags and seatbelt pretensioners may not deploy.

These signs point to a fault in the system:

• The airbag warning light stays on permanently.
• The airbag warning light only lights up intermittently.
• A fault message appears in the instrument cluster.
• The diagnostic tool gets no connection to the control unit.
• The fault memory cannot be cleared.

Which vehicles is the A1718205826 fitted in?

The A1718205826 is fitted in these vehicles: Mercedes-Benz SLK-Class R171 Convertible (2004-2011). This makes it possible to check against your vehicle.

The following vehicles are listed for this control unit:

• Mercedes-Benz SLK-Class R171 Convertible (2004-2011)

Compare the part number on the label of the removed unit with this page; this only confirms that it is the right unit. Also have the fault memory read out beforehand, because only the findings show whether the control unit is faulty or whether a connector or cable is the cause.

For the same vehicles, we also repair control units with the part numbers 1718206526, 1718207326, 285010422, 500405210770, 500408130020, 500603070328.

How does the repair of the A1718205826 work?

First have the fault memory read out, then disconnect the battery and only after that remove the control unit A1718205826. Enclose the log with the unit, create a repair order online and send in the well-packed unit.

Airbag24 checks the unit on the test bench, replaces defective components and carries out a function test. Checking, repairing and testing at Airbag24 usually take 3–4 working days. If you would like the crash data deleted, get in touch with Airbag24 briefly before sending the unit in. Your own unit is then sent back to you. Our repairs come with 2 years' statutory liability for defects. The repaired control unit comes back with all vehicle data and is ready for use as soon as it is refitted — no coding or programming is required.

How does the control unit A1718205826 get to Airbag24?

You send the control unit A1718205826 in as a parcel, or book a UPS collection for an extra charge. After the repair, Airbag24 sends the unit back to you by UPS.

Put the printed repair order into the parcel and pack the unit shockproof.